Abstract In the present study, the Polypyrrole/Limestone (PPy/LS) composites with different LS content varying from 5 wt.% to 20 wt.% were prepared for the first time. The structural, chemical and morphological investigations of the samples were determined by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) technique, and Scanning Electron Microscope (SEM), respectively. The chemical content of the LS was also specified by X-Ray Fluorescence (XRF) spectrometer. The complex permittivity components of the samples were measured by impedance analyzer between 1 Hz and 40 MHz frequencies within the 296 K–353 K temperature interval. Additionally, Nyquist plots of the samples were evaluated for determining the grain and grain boundary contributions in the samples. The real parts of the complex conductivity of the samples were also discussed in terms of frequency, temperature and LS additive wt. percentages. The activation energies of the samples were discussed in the context of dc conductivity and total conductivities. Additionally, it was determined that the conductivity mechanisms of the samples indicate the Correlated Barrier Hoping model. By the lights of all dielectric results, it was revealed that the real and imaginary components of the complex permittivity along with the conductivity of the samples are very sensitive to LS additive wt. percentage and temperature. Hence, it can be concluded that it is possible to produce very low-cost PPy based composites with controllable permittivity properties.

中文翻译：

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聚吡咯所需介电性能的天然添加剂材料：石灰石

摘要 在本研究中，首次制备了 LS 含量从 5 wt.% 到 20 wt.% 不等的聚吡咯/石灰石 (PPy/LS) 复合材料。样品的结构、化学和形态研究分别通过 X 射线衍射 (XRD)、傅里叶变换红外光谱 (FTIR) 技术和扫描电子显微镜 (SEM) 进行测定。LS 的化学成分也由 X 射线荧光 (XRF) 光谱仪指定。在 296 K–353 K 温度区间内，通过阻抗分析仪在 1 Hz 和 40 MHz 频率之间测量样品的复介电常数分量。此外，还评估了样品的奈奎斯特图以确定样品中的晶粒和晶界贡献。还根据频率、温度和 LS 添加剂重量讨论了样品复电导率的实部。百分比。在直流电导率和总电导率的背景下讨论了样品的活化能。此外，确定样品的电导机制表明相关势垒希望模型。根据所有介电结果，表明复介电常数的实部和虚部以及样品的电导率对 LS 添加剂重量非常敏感。百分比和温度。因此，可以得出结论，生产具有可控介电常数特性的非常低成本的 PPy 基复合材料是可能的。在直流电导率和总电导率的背景下讨论了样品的活化能。此外，确定样品的电导机制表明相关势垒希望模型。根据所有介电结果，表明复介电常数的实部和虚部以及样品的电导率对 LS 添加剂重量非常敏感。百分比和温度。因此，可以得出结论，生产具有可控介电常数特性的非常低成本的 PPy 基复合材料是可能的。在直流电导率和总电导率的背景下讨论了样品的活化能。此外，确定样品的电导机制表明相关势垒希望模型。根据所有介电结果，表明复介电常数的实部和虚部以及样品的电导率对 LS 添加剂重量非常敏感。百分比和温度。因此，可以得出结论，生产具有可控介电常数特性的非常低成本的 PPy 基复合材料是可能的。结果表明，复介电常数的实部和虚部以及样品的电导率对 LS 添加剂重量非常敏感。百分比和温度。因此，可以得出结论，生产具有可控介电常数特性的非常低成本的 PPy 基复合材料是可能的。结果表明，复介电常数的实部和虚部以及样品的电导率对 LS 添加剂重量非常敏感。百分比和温度。因此，可以得出结论，生产具有可控介电常数特性的非常低成本的 PPy 基复合材料是可能的。